Tool bit



FIG. 1 is a front perspective view of a tool bit showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the tool bit that form no part of the claim. 

CLAIM The ornamental design for a tool bit, as shown and described. 